Air-intake device.



C. A. HORNBURG. AIR INTAKE DEVICE. APPLICATION FILED MAY 21. 1917.

1,255,01 1. Patented Jan, 29,1918.

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CHARLES A. HORNBURG, OF DEVINE, TEXAS.

AIR-IN TAKE DEVICE.

Specification of Letters Patent.

' Patented Jan. 2a, 1918-.

Application filed May 21, 1917. Serial No. 169,992.

To all whom it may concern:

Be it known that I, CHARLES A. HORN- BURG, a citizen of the United States, residing at Devine, in the county of Medina and State of Texas, have invented a new and useful Air-Intake Device, of which the folproportions, according to the weather and temperature.

Another object of the invention is to provide a simple .and inexpensive attachment for carbureters of the nature indicated, having simple yet eflective means for regulating theinflow of cool air, and simple means for preventing the excessive inflow of air, whereby the flow of air is proportionable to the suction created by the pistons of the en- With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed,.without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawing, wherein Figure 1 is a side elevation of the device.

Fig. 2 is a longitudinal section of the air regulator.

Fig. 3 is a lator.

Fig. 4 is a fragmental elevation of the upcross section of, the air reguper end of the intake pipe, looking at right angles to the line of view in Fi 1.

In carrying out the invention, there is provided an upstanding air intake pipe 1 of suitable proportions, the upper inlet end of which is adapted to extend to the exhaust manifold 2 of the engine, for taking in air adjacent to the exhaust manifold, whereby the air is heated. The upper end of the pipe 1 is provided at the outer side 'of said pipe with an upstanding wing 3'to overlap the manifold 2, and cause the air to flow along the wall of the manifold before entering the intake pipe, whereby the air is heated by said manifold. The lower end of the pipe 1 extends at an angle, as at 4, and is provided with a transverse cool air inlet opening 5.

An air regulator is assembled with the lower discharge end 4 of the pipe 1, and embodies a sleeve 6 having one end fitting telescopically and rotatably within the end 4 of the air intake pipe, while the other end v of the sleeve 6 fits the air intake portion of the carbureter 7 similarly. The parts can be readily slid .or slipped into engagement and the sleeve 6 is held rotatably in place, whereby it can be turned without interference. The sleeve 6 has an outstanding annular corrugation 8 between its ends to bear against theend 4 of the air intake pipe, and that end portion of the sleeve 6 which fits within the intake pipe has a transverse opening or recess 9 extending from said end and of substantially the same sizeas the opening 5. By turning the sleeve 6 between the air intake pipe and carburetor, the opening 9 thereof can be brought into registration with the opening 5, to admit cool air, and the sleeve 6 can, be turned so that it will close the opening 5, to shut off the flow of cool air through said opening.

Thus, in cold weather, the sleeve 6 canbe turned to close the opening 5, whereby all of the air will flow. into the upper end of the intake pipe 1, and said air wlll be heated to supply heated air to the carbureter, which is desirable when the temperature is low. In warm weather, the sleeve 6 is turned to bring the openings 9 and 5 into registration, whereby cool air will be admitted, the amount of cool air being controlled by bringing the opening 9 more or less into registration with the opening 5. Thus, the temperature of the air supplied to the carbureter can be controlled by the rotation of the sleeve 6, to suitthe weather conditions.

The air regulator is provided with a spring pressed'yieldable air controlling valve, and for this purpose, the sleeve 6 has an instruck annular corrugation 10, preferably adjacent to the corrugation 8 at that side thereof opposite to the opening 9. This corrugation 10 provides a seat for a flap disk valve 11, whlch is movable to closed position agamst the corrugation or seat 10 away from the carbureter. In order to pivotally or hingedly mount the valve 11 within the sleeve 6,

to 10. lhe spaces between the ends of'the hinge butt 13 and recess 12 accommodate the end ortions of the hinge pin, and the valve 11 is slightly smaller in diameter than the diameter of the sleeve, whereby to permit of the flow of air past the 'mar%n of the valve when the valve is opened slig tly. This also permits the valve tjog swing open freely. The

valve 11 is 'eldably'held to its seat by means of a coiled wire retractile spring 16 having its ends looped or hooked through apertures provided in the valve 11 and sleeve 6 adjacent to the pivot of .the valve and air-receiving end of the sleeve, respectively.

he 'valve 11 in being held closed by the spring 16, willprevent the carburetor from being gorged with air, as when the engine is started or running slowly, and as the suction is increased, the valve 11 will be drawn open farther, whereby the flow of air from the intake device into the carbureter will be substantially proportional to the air suction created by the pistons working in the engine cylinders. in this manner, the intake of air is regulated, to provide for a uniform and efiective mixture of the air and atomized fuel under various conditions,

Having thus described the invention, what is claimed as new is:

1. An air intake device embodying an air intake pipe an exhaust manifold of an engine for receiving heated air, the other end'of the 'ipe.

extending at an angle and having. a coo air said seat toward said pipe,

having means at one end to fit naeaeii inlet opening, and a sleeve one end fitting Within the second mentioned end of a the intake pipe and provided with an open ing adapted to be brought into and out of r gistration with the aforesaid opening by the rotation of the sleeve, the sleeve having means between its ends to bear against the second mentioned end ofthe pipe.

2. An air intake device embodying an air intake pipe for heated air having a cool air inlet opening near its discharge end, an air regulator embodying a sleeve rotatably fitting the discharge end of said pipe and having an opening adapted to be brought into and out of registration with the aforesaid opening by the rotation of saidsleeve, the sleeve having outstanding means between its ends to bear against the discharge end of said pipe, and a yieldable valve within the sleeve for retarding the flow of air therethrou h from said pipe.

3. 11 air intake device embodying an air intake pipe for heated air having a cool air inlet opening near its discharge end, an air regulator comprising a sleeve having one end rotatably fitting the discharge end of said pipe and provided with an opening adapted to be turned into and out of registration with the aforesaid opening, the sleeve having outstanding means between its ends to bear against the discharge end of said pipe and to provide an internal valve seat, a flap valve hinged to the sleeve to swing against and a spring connecting said valve and sleeve for yieldably seating the valve.

In testimony that I claim the foregoing as my own, l have hereto afixed my signature in the presence of two witnesses.

CHARLES A. HURNBURG. Witnesses: Lorena Morris,

dAs. LYN KING, 

